Locking mechanism



Patented Sept. 13, 1934-215 ELLING ELLINGSON, OF SAN FRANCISCO,CALIFORNIA LOCKING MECEANISE Application led April 8,

The present invention relates to improvements in locking mechanisms, andits principal object is to provide a mechanism of the characterdescribed that is particularly simple in construction and may be easilyassembled. More particularly itis an object of the present invention toprovide an improved tions of a locking mechanism in assembled 1orelation.

My invention relates particularly to a lookin mechanism in which a lockcasing and a olt casing are arranged in intersectino mortises within adoor or the like, and

it 1s one of the principal obj ects of the invention to provide simpleinterlocking means between the two casings whereby one of the casings isheld against end-wise and rotary motion, while the other casing is heldagainst 2J rotary motion.

It is further proposed to provide an interlocking arrangement between abolt mounted in the bolt casing and an operating member mounted in thelock casing whereby the bolt casing is yieldingly held against end-wisemovement, and a further feature of the invention is to arrange theinterlocking means between the two casings in such a manner that thesame also serves as a means for prevent 39 ing end-wise motion of theoperating member for the bolt.

A further object is to provide an improved mechanism of the characterdescribed wherein knobs are mounted in independently operative positionsvupon opposite sides of a door, and are eectually supported andmaintained in accurate-alinement.

A further obj ect is to provide an improved device wherein the knobbearings are entirely 43 enclosed within the door and by which the useof face plates and exposed securing elements is entirely eliminated.

Another object is to provide an improved locking mechanism wherein abolt is arranged -5 to be operated by means of knobs upon opposite sidesof a door or by a key actuated member mounted within one of the knobs,the actuating connection of each of the knobs and of the key actuatedmember with the bolt being entirely independent of each other.

means for holding the different sec- 1930. Serial No. 442,588.

mechanism operative from the oppositeside of the door. G5

A still further object is to provide a locking mechanism of simple andimproved construction and operation in which the moving parts are ofsimple and rugged construction, and in which the several parts areeectually. held in operative relation.

Iiaccomplish these and other objects by `,means of the improved devicedisclosed 1n the drawing forming a part of the present applicationwherein like characters of reference are used to designate similar partsthroughout the specification and drawing, and in which, v

Fig. 1 is a transverse section of my improved locking mechanism asmounted upon a door;

Figs. 2, 3, and 4 are broken sectional views of the lock casing andknobsleeves showing various positions of the locking elements;

Fig. 5 isa broken section view of the lock casing showing the ends ofthe knob sleeves therein in elevation; A

Figs. 6 and 7 are broken vsectional views taken upon the line 6-6 ofFig. 1 in the dio rection indicated;

Fig. 8 is a broken sectional view taken upon the line 8--8 of Fig. 5 inthe direction indicated; and

. Fig. 9 is a broken side elevation of the in- 95 ner end of the boltcasing.

Referring to the drawing, the numeral 1 is used to designate in generala'door having a transverse mortise 2 and a mortise 3 formed in the edgeof the door to intersect with the 100 mortise 2. The mortises 2 and 3are of cylindrical form and of the same size whereby both mortises maybe forced with the same bit.

A tubular lock casing 4 is fitted into the transverse mortise bore 2,the ends of the casing preferably having its ends extending outwardlyslightly past the inner and outer faces of the door. The casing 4 isprovided with a circumferential slot 6 substantially midway between itsends and extending somewhat more than half way around the casing. A pairof relatively short slots -7 are formed in the casing in spaced relationto the sides of the slot 6 and positioned midway between the ends of theslot 6.

A bolt casing 8 is fitted into the mortise bore 3. The outer end of thecasing 8 is provided with a iange 9 seating upon the edge of the doorand apertured to receive suitable screws 11 for securing the casing uponthe door. The inner end of the casing is shaped to fit snugly againstthe side of the lock casing 4 along the intersection of the mortisebores 2 and 3. The inner end of the casing is provided with lugs 12arranged to enter the slots 7 and to extend through said slots into thecasing 4. The edges of the lugs v12 are preferably inclined so that thelugs taper toward their extreme ends, the inclined edges being arrangedto engage the ends of the slots 7 whereby said lugs operate to turn thecasing 4 to its proper position as the lugs are inserted into the slots.

A latch bolt 14 is slidably mounted within the outer end of the boltcasing 8. The bolt 14 is normally moved to outwardly extending lockingposition by means of a suitable spring 16 mounted within the casing inback of the bolt 14, saidspring bearing against the inner side of thebolt member and being seated upon lugs 17 struck inwardly from the wallsof the casing 8.

The latch bolt 14 is provided with a stem 18 extending axially inwardlyinto the casing 8.

An actuating member 19 is mounted upon the inner end of the stem 18,said member 19 being constructed in the shape of a stirrup and extendingthrough the slot 6 into the lock casing 4.

A pair of knob sleeves 21 and 22 extend axially into the ends of thelock casing 4 from opposite ends thereof. The sleeves 21 and 22 aretubular in form and are provided with knobs 23 of any suitable form andconstruction secured upon the outer ends of the sleeves in anyconvenient manner. The sleeves l21 and 22 fit neatly within the ends ofthe cas ing 4, the ends of said sleeves being spaced within the centerportion of the casing. Extensions 24 are formed upon the inner ends ofthe sleeves 21 and 22, said extensions overhanging the slot 6 fromopposite edges thereof and being arranged to engage the stirrup 19 formoving said stirrup to retract the bolt when either knob sleeve isturned within the casing. The ends of the extensions 24 are slightlspaced to permit either sleeve to be rotate independently of theopposite sleeve. The sleeves 21 and 22 extend axially throuvh the knobs23 and open outwardly through t e outer ends of the knobs. The knobs 23are preferably recessed'to fit over the outwardly extendingr ends of thecasing 4.

A locking member, designated in general by the numeral 26 is slidablymounted longitudinally within the casing 4. The locking member is guidedand held against rotation by means of a U-shaped guide member 25 securedwithin the casing 4 opposite the slots 6 and 7. The member 26 isprovided with a pair of spaced lugs 27 and 28 arranged tobe receivedwithin longitudinal slots 29 and 31 formed in the ends of the sleeves 21and 22 respectively, the slot 31 being provided with circumferentiallyvdisposed extensions 32 spaced from the inner end of the sleeve 22. Thelurr 27 is arranged to be moved clear of the end of the sleeve 2l andthe lug 28 is arranged to be moved at the same time to match with theextensions 32 of the sleeve 22 whereby the knob sleeves may be rotatedpast,l the lugs when in an unlocking position. V

The member 26 is provided with a longitudinal extension 33 extendingaxially through the sleeve 22 and provided at its outer end with abutton 34 positioned at the end of the sleeve whereby the member 26 maybe operated manually from the inside of the door.

A suitable cylinder lock 36 is mounted within the outer end of thesleeve 21, said lock being provided with a cylinder 37 extendinginwardly to the inner end of the sleeve 21 aid fitting neatly therein.The inner end of the cylinder 37 is provided with an inclined slotJ 38arranged to engage the lug 2"( whereby a rotation of the cylinder willimpart axial movement to the member 26. The lock 36 may be of anysuitable construction and is operated in the ordinary manner by means ofa suitable key, not shown, to rotate the cylinder 37 within the sleeve21.

The locking member 26 is provided with an extension 39 movable betweenthe back of the guide 25 and the opposite wall of the casing 4.V Theextension 39 is defined by a slot 41 arranged to receive the back oftheguide member, and of a width suiiicient'toreceive the inner end of thestirrup 19 when in retracted position for securing said stirrup and thebolt actuated thereby in retracted position, if

desired. The end of the extension 39 may be inclined, as shown in dottedlines at 42, to Vbe engaged by the stirrup 19 when in certain positionswhereby the movement of the stirrup when the bolt is retractedl operatesto move the locking member to releasing position. as hereinafter morefully explained. y

The edges of the slot extensions 32 adjacent the inner end of the sleeve22 are inclined as at 43 whereb the sleeve may be turned and the inclineedges moved to engage the lug 28 and move the member 26 longitudinallyto releasing position.

To assemble m improved locking mechanism, the lock casing 4 is insertedinto its mortise bore 2 with the slots 6 a-nd 7 opposite the openinginto the mortise 3. The knob sleeves 21 and 22, with the knobs 23 andthe locking member 26 and lock 36 assembled thereon, are thenapplied-upon the ends of the casing 4, the member 26 being inserted intothe guide 25. The bolt casing 8, with the bolt 14 and its actuating stemand stirrup assembled thereon, is inserted into the mortise. 3, thestirrup being moved into the slot 6 of the casing 4 by pressing thelatch bolt inwardly manually before the knob sleeves 21 and 22 are movedinwardly sufficiently to cause the extensions 24 to extend over the slot6. The sleeves 21 and 22 are thenmoved inwardly to their extremepositions with the extensions 24 extendinginto the stirru 19. The boltcasing 8 is then pressed inwar ly to its extreme positionwith the lugs12 entering the slots 7 and extending through said slots intocircumferenti al slots 44 formed in the sleeves 21 and 22, as best shownin Figs. 5 and 8 of the drawing, thereby preventing axial movement ofthe casing 4and the sleeves 21 and 22. The slots 44 are made ofsuiicient length to permit rotation of the sleeves 21 and 22 throughapproximately 180 of movement. The casing 8 is then secured by thescrews 11 applied through the flange 9 into the -edge of the door,thereby efectually securing the entire device upon the door.

In operation, the locking member 26 normally occupies aposition with thelug 27 clear of the slot 29 and the lug 28 opposite the extensions 32 ofthe slot 31, whereby either knob sleeve 21 and 22 may be rotated pastthe lugs 27 and 28. When it is desired to lock the door against openingfrom the outside without interfering with the free opening of the doorbv the knob upon the inner side of the door, the button 34 is' pressedinwardly, thereby causing the member 26 to be moved longitudinallyWithin the casing 4 and moving the lug 27 into the slot 29 of the sleeve21, thereby locking the sleeve 21 againstrotationand preventing theouter knob from being rotated to operate the latch. This position isherein referred to as the normall or single locking position, and isillustrated in Fig. 3 of the drawing. By turning the inner knob, theextension 24 of the sleeve 22 is moved to actuate the bolt and move thesame to a releasing position whereby the door may be opened.

This rotative movement of the sleeve 22- causes the lug 28 to Ibeengaged by the inclined edges of the slot extensions 32, thereby movingthe member 28 longitudinally to its unlocking position, as shown in Fig.4 of the drawmg.

.To lock the door against opening from either side, the locking member26 is first moved manually to the normal locking osition shown in Fig.3, the lug 27 thereby eing moved into the end of the slot 29 and at thesame time into the open end of the inclined slot 38 of the lockcylinder. When now the lock cylinder 37 is turned within the sleeve 21by means of a proper key inserted into the lock 36, the slot 38 engagesthe lug 27 and moves the member 26 longitudinally to the double lockingposition shown in Fig. 2 of the drawing, thereby movin gthe lug 28 intothe slot 31 near the end of the sleeve 22. In this position, the lug 27engages the slot 29 and revents rotation of the outer sleeve 21, and t elug 28, engaging the slot 31, prevents rotation of the inner sleeve 22.At the same time, the extension 39 is moved to extend in back of thesti'rrup 19, thereby preventing the bolt from being retracted.

To unlock the door, the cylinder 37 is turned by means of the lock 36 ina reverse direction, thereby forcing the member 26 longitudinally to itsnormal locking position. A further rotation of the cylinder 37 by meansof the lock key, causes an extension 46 carried upon the inner end ofthe cylinder 37 and extending into the stirrup 19, to engage and movesaid stirrup to retract the bolt, the initial movement of the cylindercausing the extension 46to bemoved from the right hand side of thestirrup, as viewed in Figs. 6 and 7, to the left hand side, and thefurther movement causing the stirrup to be retracted into the casing 4to actuate the bolt. The lock cylinder 37 may be turned independently,or if desired, the knob. sleeve 21 may be turned as shown in Fig. 6 toactuate the bolt after the ing position.

While I have illustrated and described what I now regard as thepreferred embodiment of my invention, the device is of course subject tomodification in numerous details of construction and arrangementwithoutdeparting from the spirit of my invention. I

therefore do not Wish to be restricted to the specific detailsillustrated and described, but desire to avail myself of allmodifications which may fall within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. A locking mechanism comprising a lockcasing mounted transversely through a door; a bolt casing mounted withinthe edge of the door and engaging tbe lock casing; a bolt slidablymounted Within the bolt casing and provided with a stem extending intothe lock casing a pair of knobs rotatably mounted upon the ends of thelock casing and provided with sleeves extending into the casing intoactuating engagement with the bolt stem; means engaging the knob sleeveswithin the caslng to prevent axial movement of sald sleeves relative tothe casing and to permlt rotatlon of said sleeves for actuating thebolt; and a locking member mounted within the lock casing and movable toengage and disengage the sleeves as desired.

2. A locking mechanism comprising a lock casing mounted transverselythrough a door; a. bolt casing mounted Within the edge of the door andengaging the lock casing; a bolt slidably mounted Within the bolt casingand provided with a stem extending into the lock casing; a pair .ofknobs rotatably mounted upon the ends of the lock casing and providedwith sleeves extending, into the casing into actuating engagement withthe bolt stem; means engaging the knob sleeves within the casing toprevent axial movement of said sleeves relative to the casing and topermit rotation of said sleeves for actuating the bolt; and a lockingmember mounted within the lock casing, said member being movable from anunlocking position, permitting free rotation of both knob sleeves, tosingle and double locking positions locking` one or both of said sleevesagainst rotation as desired. v

3. A locking mechanism comprising a lock easing mounted transverselythrough a door; a bolt casing mounted Within the edge of the door andengaging the lock casing; a

bolt slidably mounted Within the bolt casing and provided with a stemextending into the lock casing: a pair of knobs rotatably mounted uponthe ends of the lock casing and provided with sleeves extending into thecasing int-o actuating engagement with the bolt stem; means engaging theknob sleeves within the casing to prevent axial movement of said sleevesrelativ-e to the casing and to permit rotation of said sleeves foractuating the bolt; a locking member mounted Within the lock casing,said member being movable from an unlocking position, permitting freerotation of both knob sleeves, to single and double locking positionslocking one or both of said sleeves against rotation as desired; and keyactuated means mounted in one of the knobs and engaging the lockingmember to move said member to desired positions.

4. A locking mechanism comprising a lock casing mounted transverselythrough a door;

a bolt casin mounted Within the edge of the door and engaging the lockcasing; a bolt slidably mounted within the bolt casing and provided witha stem extending into the lock casing; a pair of knobs rotatably mountedupon the ends of the lock casing and provided with sleeves extendinginto the casing into actuating engagement with the bolt stem; meansengaging the knob sleeves Within the casing to prevent axial movement ofsaid sleeves relative to the casing and to permit rotation of saidsleeves for actuating the bolt; a locking member mounted Within the lockcasing, said member being movable from an unlocking position, permittingfree rotation of both knob sleeves, to single and double lockingpositions locking one or both of said sleeves against rotation asdesired; key actuated means mounted in one of the knobs and engaging thelocking member to move said member to desired positions; and manuallyoperated means mounted 'Within the opposite knob and connected to thelocking member `to move the same between certain positions independentlyof the key actuated means.

5. A locking mechanism comprising a lock casing mounted transverselythrough a door; a bolt casing mounted Within the edge of the door andengaging the lock casing; a bolt slidably mounted Within the bolt casingand provided with a stem Aextending into the lock casing; a pair ofknobs rotatably mounted upon the ends of the lock casing and providedwith sleeves extending into the casing into, actuating engagement withthe bolt stem; means engaging the knob sleevesI Within the casing torevent axial movement of said sleeves relatlve to the casing and topermit rotation of said sleeves for actuating the bolt; a locking membermounted Within the lock casin said member being movable from an unocking position, permitting free rotation of both knob sleeves, tosingle and double locking positions locking one or both of said sleevesagainst rotation as desired; key actuated means mounted in one of theknobs and engaging the locking member to move said member to desiredpositions; manually operated means mounted Within the opposite knob andconnected to the locking member to move the same between certainpositions -independently of the key actuated means;

and means carried by the locking member and movable to engage the boltstem to secure the bolt in receded position.

6. A locking mechanism comprising a lock casing mounted transverselythrough a door;

a bolt casing mounted Within the edge of the door and engaging the lockcasing; a bolt slidably mounted Within the bolt casing and provided witha stem extending into the lock casing.; a pair of knobs rotatablymounted upon the ends of the lock casing and provided with sleevesextending into the casing into actuating engagement with the bolt stem;means engaging the knob sleeves within the casing to prevent axialVmovement of said sleeves relative t o the-misi,- ing and t0 Pel'mitIOttlon 0f Sad sle'vesif'igainst rotation; an outer knob locking lug thebolt; a locking member.;

for actuating slidably mounted within the casing, one endof said memberextending longitudinally through the sleeve of the inner knob and beingmanually operable therethrough; key actuated means mounted within theouter knob to engage and move the locking member from the outer side ofthe door; and locking lugs formed upon the locking member and movable toengage slots formed in the .knob sleeves to lock the knobs againstrotation.

7. A locking mechanism comprising a lock casing mounted transverselythrough a door; a bolt casing mounted Within the edge of the door andengaging the lock casing; a`bolt slidably mounted Within the bolt casing'and provided with a stem extending lnto the lock casing; a pair ofknobs rotatably mounted u on the ends of the lock casing and providedvvith sleeves extending into the casing into actuating engagement withthe bolt stem; means engaging the knob sleeves within the casing toprevent axial movement of said sleeves relative to the casing and topermit rotation of said sleeves for actuating the bolt; a locking memberslidably mounted within the sleeve of the inner knob and being manuallyoperable therethrough; key actuated means mounted within the outer knobto engage and actuate the locking member; means connected to the lockcasing to hold the locking member against rotation; an outer knoblocking lug formed upon the locking member and movable to engage alongitudinal groove in the outer knob sleeve to lock said sleeve andknob against rotation; and an inner knob locking lug formed upon thelocking member and movable to engage a groove in the inner knob sleeveto lock said inner sleeve and knob .against rotation, said groove havingcircumferential extensions permitting rotation of the said sleeve whenthe locking member is in certain positions.

8. A locking mechanism comprising a lock casing mounted transverselythrough the door; a bolt casing mounted Within the edge of the door andengaging the lock casing; a bolt slidably mounted Within the bolt casingand provided with a stem extending into the lock casing; a pair of knobsrotatably mounted upon the ends of the lock casing and provided withsleeves extending into the casing into actuating engagement with thebolt stem; means engaging the knob sleeves Within the casing to preventaxial movement of said sleeves relative to the casing and to permitrotation of said sleeves for actuating the bolt; a locking memberslidably mounted within the sleeve of the inner fable to engage a outerknob sleeve to lock said sleeve and knob '-.against rotation; an innerknob locking lug knob and being manually operable there-l through; keyactuated means mounted within the outer knob to engage and actuate thelocking member; means connected to the .lock casing to hold the lockingmember the locking member and mov- 4formed upon longitudinal groove inthe formed upon the locking member and movable to engage a groove in theinner knob sleeve to lock said inner sleeve and knob against rotation,said groove having circumferential extensions permitting rotation o thesaid sleeve when the locking member is in certain positions; the inneredges of said groove being inclined to engage the locking luv and movesaid lug and member Jfrom a loking position to an unlocking position.

9. A locking mechanism comprising aA lock casing mounted"transverselythrough a door; a bolt casing mounted within the edge of the door andengaging the lock casing; a bolt slidably mounted within the bolt casingand provided with a stem extending into the lock casing; a pair of knobsrotatably mounted upon the ends of the lock casing and provided Withsleeves extending into the casing into actuating engagement with thebolt stem; means engag-v ing the knob sleeves within the casing toprevent axial movement of said sleeves relative to the casing and topermit rotation of said sleeves for actuating the bolt; a locking memberslidably mounted within the sl'eeve of the inner knob and being manuallyoperable therethrough; key actuated means mounted Within the outer lmobto engage and actuate the locking member; meansV connected to the lockcasing to hold the locking member against rotation; an outer knoblocking lug formed upon the locking member and movable to engage alongitudinal groove in the outer knob sleeve to lock said sleeve andknob against rotation; an inner knob locking lug formed upon the lockingmember and movable to engage a groove in the inner knob sleeve to locksaid inner sleeve. and knob against rotation, said groove havingcircumferential extensions permitting rotation of the said sleeve whenthe locking member is in certain positions; and an inclined edge formedupon the locking member' to be engaged by the bolt stem When movedinwardly to move the locking member to an unlocking position when saidbolt is receded.

10. In a locking mechanism, a lock casing mounted transversely through adoor; and a bolt casing mounted in the edge of the door and providedwith lugs engaging slots formed in the lock casing to secure said casingwithin the door, said lugs being tapered toward their outer end, and theedges of said lugs engagsusV -against axial movement and to permitlimited Arotative movement of said sleeves relative to the lock casin12. In a loc ing mechanism, a lock casing mounted transversely through adoor; a pair of knob sleeves rotatably mounted within the ends of thecasing; and means engaging slots formed in the sleeves within the endsof the casing to hold the sleeves against axial movement and to permitlimited rotative movement of the sleeves independently of each other.

13. In a locking mechanism, a lock casingl mounted transversely througha door; a pair of knob sleeves rotatably mounted within the ends of thecasing; means engaging slots formed in the sleeves within the ends ofthe casing to hold the sleeves against axial movement and to permitlimited rotative movement of the sleeves independently of each other; alocking member slidablyl mounted within the casing and provided withlugs movable to engage slots formed in the knob sleeve to lock one orboth of said knobs against rotation as desired; and means carried by thecasing to prevent rotation of the locking member.

1 4. In a locking mechanism, a lock casing mounted transversely througha'door; knob sleeves mounted within the ends of the casing, said sleevesbeing independently rotatable from opposite sides of the door; a boltslidably mounted within the edge of the door; bolt actuating meansconnected to the bolt and engaged by the sleeves for receding the boltwhen either knob is turned; a locking member slidably mounted within thecasing and provided with lugs movable to engage slots formed in thesleeves to lock one or both of said sleeves against rotation; and anextension carried by the locking member and movable to engage the boltactuating means to secure said bolt in receded position.

`15. In a locking mechanism, a tubular lock casing mounted transverselythru a door and provided with a pair of spaced slots; a pair of tubularknoby sleeves rotatably mounted within the lock casing extending fromthe approximate center to opposite ends thereof and provided with slotsregistering longitudinally with the slots in the lock casing; and a boltcasing mounted within the edge of the door and provided with lugsextending thru thc registered slots of the lock casing and the knobsleeves to secure the same in assembled relation within the door.

16. In a locking mechanism, a tubular lock casing mounted transverselythru a door and provided with a pair of spaced slots; a pair of tubularknob sleeves rotatably mounted within the lock casing extending from theapproximate center to opposite ends thereof and provided with slotsregistering longitudinally with the slots in the lock casing; and a boltcasing mounted within the edge ofthe door and provided with lugsextending thru the registered slots of the lock casing and the knobsleeves to secure the same in assembled relation within the door, saidslots in said knob sleeves being longer than the slots in the lockcasing whereby partial rotation offsaid sleeves within said lock casingmay be permitted.

17. In a locking mechanism, a lock casing mounted transversely through adoor, a knob sleeve extending into the lock casing, and a bolt casingmounted within the edge of the door and provided with means extendinginto engagement with the lock casing and With the sleeve therein tosecure the same in assembled relation upon the door.

18. In a locking mechanism, a lock casing mounted transversely through adoor, a knob sleeve extending into the lock casing, said sleeve having acircumferential slot alined with an opening formed in the lock casing,and a bolt casing mounted within the edge of the door and provided withmeans extending through the casing opening into engagement with the slotof the sleeve to secure said casing and sleeve in assembled relation.

19. In a locking mechanism, a lock casing mounted transversely through adoor, a knob sleeve extending into the lock casing, a bolt casingmounted within the edge of the door and provided with means extendinginto interlocking engagement with the lock casing and with the sleevetherein to hold the same in operative assembled relation, a boltslidably mounted within the bolt casing and pro- I vided with a stem andyoke extending into the lock casing,

an actuating extension carried bythe end of the sleeve and engagedwithin the yoke, and a spring seated within the bolt casing and inengagement therewith and with the bolt, said spring being compressed toexert an outward pressure upon the bolt and an inward pressure upon thebolt casing, whereby the bolt casing is held in'interlocking engagementwith the lock casing and the sleeve and the yoke is held seated upon theactuating extension.

20. In a lock mechanism for a door having intersecting mortice bores, acylindrical casing mounted in the transverse bore to form bearing for arotatable member slidably mounted therein and having a lug engaging slotand means for receiving a bolt stem formed in one side thereof, a boltcasing slidable in the other bore having a lug eX- tending therefromadapted to engage within the slot to secure the said lcylindrical casingagainst movement within its bore and the slots engaging the lug tosecure the bolt casing against rotative movement within its bore, a boltslidably mounted within the bolt casing, means connecting the bolt tothe rotatable member for operation thereby and spring means urging thebolt outward and the bolt casing inward in its bore whereby the lug isheld in engagement -with the slot.

21. In a lock mechanism for a door having intersecting mcrtice bores, acylindrical vlcasing mounted in the transverse bore to form bearing fora rotatable member slidably mounted therein, and having a lug engagingslot and means for receiving a bolt stem formed in the casing, a boltcasing slidably mounted in the other bore having a lug extending throughthe slot and means formed on the rotatable member and engaged by thesaid lug within the cylindrical casing to prevent withdrawal of the saidrotatable meml ber from the casing and permitting rotation thereof foractuating a bolt slidably mounted Iin the bolt casing and operativelyconnected to the rotatable member.

22. In a lock mechanism for a door having lntersecting mortice bores, acylindrical casing mounted in the transverse bore to form bearing for arotatable member insertable. from the open end of the cylindricalcasing, a slot and means for receiving a bolt stem formed in the casing,a bolt casing mounted in the other bore having a lug engaged within theslot to secure the cylindrical casing within its bore and the slotengaging the lug to hold the bolt casing against turning within itsbore, a bolt slidable in the bolt casing having a stem extending intothe cylindrical casing, an aperture formed in the stem to receive oneend of the rotatable member when inserted into operative position withinthe cylindrical casing and means carried by the `bolt casing preventingwithdrawal of the rotatable member.

23. A locking mechanism comprising a bolt casing having a boltretractible therein, and spring means urging the bolt outward, a lockcasing arranged transversely to the bolt casing and having an operatingelement for the bolt revolvable therein, a connection between theoperating element and the bolt adapted to urge the bolt casing upon thelock casing and a connection between the two casings ada ted to hold theoperating element and the Fock casing against axial movement and the twocasings against rotative movement.

24. A locking mechanism comprising a bolt casing having a boltretractible therein, a lock casing arranged transversely to the boltcasing and having an operating element for the bolt revolvable thereinand a slidable connection between the two casings forming means forholding the operating element against axial movement.

25. A locking mechanism comprising a lock casing having lug receivingopenings, a bolt casing extending transversely thereto and having lugsreceivable in the openings, a bolt slidable in the bolt casing, a boltactuating member rotatably carried by the loci; easing and beingoperatively connected to the bolt, and a spring for yieldingly holdingthe bolt in contact with the actuating member and the bolt casingpressing against the lock casing. i

26. In a locking mechanism, a lock casing having a bolt and a lugreceiving opening,

a bolt casing having a lug receivable in the lug opening, abolt slidablein the bolt casing, a boltl operating member rotatable in the lockcasing, and being operatively connected tothe bolt, said member having aslot for slidably receiving the lug, said lug preventing longitudinalmovement of the operating member in the lock casing.

It witness whereof, I hereunto set my signature.

ELLING ELLINGSON.

